nkpart

{-# LANGUAGE PartialTypeSignatures #-}
module Lib
    ( someFunc
    ) where

import Diagrams
import Diagrams.Prelude
import Diagrams.Backend.SVG.CmdLine
import Diagrams.Backend.SVG
import System.Process

nkpart

replace $ with (), and reverse

f $ y 3
f (y 3)

change let to bind, and reverse

nkpart

{-# LANGUAGE NoMonomorphismRestriction #-}
{-# LANGUAGE OverloadedStrings #-}
module Data.Yaml.Extended (module Data.Yaml.Extended, lift) where

import Data.Yaml
import qualified Data.Text as T
import Control.Monad.State.Strict (StateT, runStateT, unless, lift, get, modify)
import qualified Data.HashMap.Strict as HM (null, delete, keys)
import Data.List (intercalate)

nkpart

doThing :: (MonadTrans t
            ,MonadFree (MyFreeCache Something) (t m)
            ,MonadFree (MyFreeCache OtherThing) m
            )

nkpart

Pieces you need:

* emacs
* ghcid

ghcid needs to know the height of the terminal, we'll set it explicitly 

height = (window-height) - (scroll-margin) - 1

set this height as your term-buffer-maximum-size

nkpart

{-# LANGUAGE NoMonomorphismRestriction #-}
{-# LANGUAGE TemplateHaskell           #-}
{-# OPTIONS_GHC -fwarn-missing-methods #-}
module Err where

import Control.Lens
import Control.Monad.Error
import Control.Monad.Error.Lens

-- Here is a fairly typical situation, where we have low level errors in certain

nkpart

{-# LANGUAGE ScopedTypeVariables #-}
module CrazyIO (module CrazyIO, mmapFileByteString) where

import qualified Data.Vector.Storable      as V
import qualified Data.ByteString as BS
import qualified Data.ByteString.Internal as BS
import           Foreign
import           System.IO.MMap

crazyLoad :: forall a. Storable a => FilePath -> Maybe (Int64, Int) -> IO (V.Vector a)

nkpart

{-# LANGUAGE TemplateHaskell #-}
{-# LANGUAGE RankNTypes #-}
module Val where

import Data.Functor.Compose
import Control.Applicative
-- import Data.Semigroup
-- import Data.List.NonEmpty
import Control.Lens
import Data.Validation

nkpart

∴ ghci
:iGHCi, version 7.8.3: http://www.haskell.org/ghc/  :? for help
 Loading package ghc-prim ... linking ... done.
Loading package integer-gmp ... linking ... done.
Loading package base ... linking ... done.
Prelude> :i traverse

Top level:
    Not in scope: ‘traverse’
    Perhaps you meant ‘reverse’ (imported from Prelude)

nkpart

fmap . fmap . fmap

Functors and Traversables compose.

You might have seen this statement before. This is how you can take advantage of it.

Composing many fmap calls gives you a function that will drill down into a structure and modify it at a certain depth in that nested structure.